HP 8340A Operating Manual page 25

Mo9-el
8340A
Table 1- 1 . Model HP 8340A Specifications and Supplemental Peiformance Characteristics ( 1 2of15)
Figure 5.
Typical 8340A AM Distortion for Various Modulation Rates and Depths
INCIDENTAL PHASE MODULATION (in peak radians) (Rates
INCIDENTAL FM: Incidental Phase Modulation x Modulation Frequency
AM INPUT IMPEDANCE:
RANGE:
10 milliseconds to 200 seconds forward sweep times
Fastest possible sweep typically cycles once every 40 ms; fastest possible full band sweep typically cycles
once every 150 ms.
RESOLUTION: Approximately 0.1
ACCURACY:
(sweeptimes �50 seconds)
PULSE MODULATION INPUT
Front panel BNC female input connector. TTL compatible (open circuit is TTL high level and keeps
on). Damage level is +12 Vdc, -20 Vdc.
AM MODULATION INPUT
Front panel BNC female input connector. Nominal input impedance is 600 Ohms.
LEVELING EXT INPUT
Front panel BNC female input connector. Used for power meter leveling or crystal detector leveling.
Input impedance in XTAL or METER modes is nominally 1 MOhm. Refer to EXTERNAL LEVELING
specifications.
FREQUENCY STANDARD EXT
Rear panel BNC female connector. Accepts 5 or 10 MHz signal from internal or external timebase. A
BNC jumper connects this input to the 8340's FREQUENCY STANDARD INT output for operation
from 8340A's internal timebase. External signal input must be 5 MHz ±50 Hz or 10 MHz ±100 Hz, 0 to
+ 10 dBm. Nominal input impedance is 50 ohms.
Specifications are shaded; Supplemental Performance Characteristics are not.
AMPLITUDE MODULATION
7
6
�
2
5
�
a:
�
4
Cl
3
!::1
z
� 2
a:
<(
:c 1
0
20 40
0
MODULATION DEPTH
Nominally 600 Ohms.
SWEEP TIME
% of current sweep time value.
INPUTS
Scans by HB9HCA and HB9FSX
(Cont'd)
100
60 80
�10 30%
kHz, Depth): <0.4 typically
General Information
RF
1-17